"Jürgen Exner" wrote in message
news:Hegpi.640$zJ4.435@trndny03...
N wrote:
If perspective has nothing to do with focal length and only relates
to the distance between the subject and camera, what makes a 50mm
lens normal?

The fact that a lens with 50mm focal length on a regular 35mm film has
approximately the same angle of view as the normal human vision.

jue


Does your eye have an angle of view of 46 degrees? Mine is certainly wider
than that.